EP0704229B1 - Procédé et dispositif pour la décharge à impulsion d'un fluide, particulièrement d'un agent extincteur de feu - Google Patents

Procédé et dispositif pour la décharge à impulsion d'un fluide, particulièrement d'un agent extincteur de feu Download PDF

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Publication number
EP0704229B1
EP0704229B1 EP95250235A EP95250235A EP0704229B1 EP 0704229 B1 EP0704229 B1 EP 0704229B1 EP 95250235 A EP95250235 A EP 95250235A EP 95250235 A EP95250235 A EP 95250235A EP 0704229 B1 EP0704229 B1 EP 0704229B1
Authority
EP
European Patent Office
Prior art keywords
pressure
fluid
liquid
dispensing
high pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95250235A
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German (de)
English (en)
Other versions
EP0704229A3 (fr
EP0704229A2 (fr
Inventor
Jasper Von Oertzen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arndt H Von Oertzen (gmbh & Co)
Original Assignee
Arndt H Von Oertzen (gmbh & Co)
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Filing date
Publication date
Application filed by Arndt H Von Oertzen (gmbh & Co) filed Critical Arndt H Von Oertzen (gmbh & Co)
Publication of EP0704229A2 publication Critical patent/EP0704229A2/fr
Publication of EP0704229A3 publication Critical patent/EP0704229A3/fr
Application granted granted Critical
Publication of EP0704229B1 publication Critical patent/EP0704229B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
    • A62C35/023—Permanently-installed equipment with containers for delivering the extinguishing substance the extinguishing material being expelled by compressed gas, taken from storage tanks, or by generating a pressure gas

Definitions

  • the invention relates to a method for pulse-shaped Discharge of a liquid, in particular a fire extinguishing agent, from the front opening of a discharge tube or hose by applying high pressure to the liquid, so that the liquid is in a droplet of liquid Mist is broken up, causing the discharge is interrupted by placing one between the front opening of the discharge tube or hose and a high-pressure pump shut-off element in at least one is brought substantially closed position, as well as on a Device for the pulsed discharge of a liquid.
  • a liquid in particular a fire extinguishing agent
  • the valve will again closed to a new amount of extinguishing agent in the compressed air to promote area and a new pressure pad build up, whereupon the valve opened again and the Extinguishing agent quantity is discharged under atomization.
  • this known method requires a relatively large amount great expenditure on equipment, since the extinguishing agent has a line connected to the extinguishing agent supply to the discharge area must be supplied while a via another line Connection to the compressed air source is established, being above also the compressed air source in the form of a conventional breathing air bottle the use is limited to about 12 liquid discharges since then the compressed air supply is exhausted.
  • the well-known Process the fundamental disadvantage that the used Compressed air additional with every discharge of extinguishing liquid Air and thus additional oxygen in the range of Source of fire occurs, which leads to a new partial ignition of fire can come.
  • a pressure accumulator for example in the form of a known membrane or bladder accumulator, biased so that the pressure built up, of the order of 20 bar to 500 bar, preferably can be between 40 bar, in particular 100 bar and 300 bar, upon release, immediately on the amount of liquid to be dispensed acts and this from the front opening of the discharge tube or hose throws out, by choosing the size and the shape of the discharge opening influences the shape of the spray jet can be.
  • the method according to the invention can be used with liquid quantities discharged in pulses from 0.3 l to 5 l delivery rates from 20 to 130 l / min at a Throwing distance between 10 m and 20 m and an extinguishing effect between 5 m and 10 m reach, due to the pulsed discharge the posting rate per unit of time is particularly high.
  • the discharge of the liquid is independent of one separate pressure medium supply, since the discharge pressure by the Delivery pressure of the liquid is built up.
  • the method according to the invention is special suitable for discharging extinguishing liquid.
  • it can also instead of known water cannons against violent ones Demonstrators or similar are used, it being particularly advantageous is that to discharge small amounts of liquid per Impulse of the equipment effort is so low that of one person portable discharge pipes or hoses are used and that suitable irritants are added to the liquid can be the result of the Splitting into liquid droplets can be particularly effective.
  • the invention further relates to a device for pulse-shaped Discharge of a liquid, in particular a fire extinguishing agent, with a discharge tube having a front opening or hose connected to a liquid source is, with a high-pressure pump arranged between the liquid source and the front opening for generating pressure for the Discharge a quantity of liquid from the front opening under high pressure so that the amount of liquid in one out Liquid droplets existing mist is broken up, as well with one provided between the high pressure pump and the opening Shut-off element between an open discharge position and one essentially closed Locking position is adjustable, and is characterized by that between high pressure pump and shut-off element at least one pressure accumulator to be charged with liquid is provided is.
  • the opening preferably forms the spray jet shaping nozzle opening and can be in a special embodiment to adapt to the respective application in their Cross-sectional dimensions and their shape changeable or by interchangeable insert pieces can be trained.
  • shut-off valve is used in particular for fire-fighting purposes in the locked position advantageously a small one Allows the amount of liquid to pass, so there is a risk of freezing of the fire extinguishing agent. If the remaining Passage opening has a small cross section impaired building up sufficient discharge pressure Not.
  • a manually operated shut-off valve can act as a blocking element be used.
  • the at least one pressure reservoir is preferred Design formed by a membrane or bladder accumulator.
  • a membrane or bladder accumulator Such stores essentially consist of a steel container, in which contains a normally prestressed nitrogen Partial space opposite by a membrane or a bubble the container opening is sealed. This nitrogen will due to pressure load on the container opening due to its preload also compressed, so that there is a storage of the pending Pressure results and with sudden relief of the container opening a sudden expansion of nitrogen and so that a pressure transfer takes place.
  • the device according to the invention can be a portable lance or Have gun that forms the discharge tube and on which the Manual operation provided for activating the locking element is.
  • Several pressure accumulators are available to achieve larger throwing distances be the one with the outlet of the high pressure pump and on the other hand are connected to the shut-off element, so that several pressure accumulators arranged in parallel due to the delivery pressure be charged and their energy to carry one Amount of liquid is available.
  • the device according to FIG. 1 contains a high pressure pump 2 which is connected to a liquid source 1.
  • a high pressure pump 2 can a large liquid container, however, for example also act as a water supply line.
  • the high pressure pump 2 is a safety valve 3 downstream, which when reached of a given pressure a return of pumped Liquid caused by line 4.
  • Via the safety valve 3 is the output of the high pressure pump 2 to one Hose 8 connected, which is wound on a hose drum 5 is and the beginning of its end in the swivel 6 Hose reel 5 leads through which the connection to the high pressure pump 2 is produced.
  • the hose drum 5 can by means of a crank handle 7 can be rotated.
  • the outer end of the hose 8 is connected to a T-piece 9, one of which is a connecting hose 11, the Cross section significantly larger than that of the hose 8 is, via a manually operated shut-off valve 13 to one Lance 12 extends and on the other hand a pressure accumulator 10 is connected, which can be a membrane or bladder accumulator can.
  • the high pressure pump 2 for example, electrically or can be driven by an internal combustion engine, activated, so it pumps liquid from the liquid source 1 in the hose 8 and the connecting hose 11, wherein in this builds up a pressure caused by the delivery pressure of the high pressure pump 2 is determined and can be, for example, 250 bar. This pressure also results in pressure being stored in the pressure accumulator 10 due to compression from there, opposite the liquid sealed, prestressed nitrogen. Once the desired fluid pressure has been built up, how can mentioned above, a return of liquid over the Line 4 take place.
  • the shut-off valve 13 is closed, and the delivery pressure does not only result in subsequent delivery of liquid in the connecting hose 11 and the pressure accumulator 10, but also the rebuilding of a discharge pressure.
  • the hose 8 is a relative may have a small clear width, since the amount of liquid to be pumped per unit of time low and the discharge pressure is high.
  • the specified discharge pressure has changed after a period of rebuilt about 1 to 2 seconds, so that a new discharge a quantity of liquid can be carried out.
  • an opening 14 with the specified dimensions and the other sizes one Throwing distance of the spray jet of about 10 m and an extinguishing effect reached up to about 5 m.
  • the device differs according to the figure 2 of that according to Figure 1 essentially in that to the hose 8 'via interconnected cross pieces 9a, 9b, 9c and a T-piece 9 'connected to the cross piece 9c identically designed pressure accumulators 10a, 10b, 10c, 10 'connected are. These pressure accumulators connected in parallel in this way can for example, membrane or bladder memory.
  • the T-piece 9 ' is via a connecting line 11 'and the cross pieces 9a, 9b, 9c are via connecting lines 11a, 11b, 11c to a receiving space 15 connected, the manually operated shut-off valve 13 'is connected upstream. At the shut-off valve 13 'closes an exhaust pipe 12 '.
  • Ejection pipe 12 ', shut-off valve 13' and Recording room 15 can in the manner of a water cannon on a Vehicle or similar be mounted, on which, for example the pressure accumulator 10 ', 10a, 10b, 10c can be located. If on this vehicle is also arranged the high pressure pump expediently omitted the hose drum 5 ', or it is one on the vehicle or similar assembled hose reel used, around the inlet of the high pressure pump 2 'by means of a To connect hose with the liquid source 1 '.
  • the liquid builds up during operation of the device shown high-pressure pump 2 'conveying from the liquid source 1' the hose 8 ', the cross pieces 9a, 9b, 9c and the T-piece 9' Pressure in the connecting lines 11a filled with liquid, 11b, 11c, 11 'including the receiving space 15 and presses also liquid in the pressure accumulator 10a, 10b, 10c, 10 ', see above that in the manner described in connection with Figure 1 Discharge pressure is built up.
  • the amount of impulses to be carried out Liquid is absorbed by the pressure accumulator 10a, 10b, 10c, 10 'determines and can for example 4 liters.
  • the discharge pressure can be around 150 bar.
  • the Discharge pressure a squeezing out of the amount of liquid by the Discharge tube 12 'and from its front opening 14', it too spraying the liquid into a droplet
  • the jet of liquid comes, the shape of which through the shape the opening 14 'is determined. If the opening 14 'a diameter of about 15 mm, so with a pressure of about 150 bar with a liquid volume of 4 liters a throw of about 20 m and an extinguishing effect of up to about 10 m.
  • the high-pressure pump delivers 2 'liquid and build again in the described Way a discharge pressure for the discharge of a further quantity of liquid of, for example, 4 liters. This build up of pressure requires about 1 to 2 seconds so the device afterwards ready to dispense another amount of liquid is.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Nozzles (AREA)
  • Fire-Extinguishing Compositions (AREA)

Claims (9)

  1. Procédé pour l'éjection impulsionnelle d'un liquide, notamment d'un agent d'extinction de feu, à partir de l'ouverture avant d'un tube ou d'un tuyau d'éjection, par application d'une pression élevée au liquide de sorte que le liquide est divisé en un brouillard constitué de petites gouttelettes de liquide, à la suite de quoi l'éjection est arrêtée par le fait qu'un élément de blocage situé entre l'ouverture avant du tube ou du tuyau d'éjection et une pompe à haute pression, est amené dans une position sensiblement fermée, caractérisé en ce que lorsque l'élément de blocage est dans la position sensiblement fermée, le liquide agit au moyen de sa pression d'entraínement sur au moins un accumulateur de pression et précontraint ce dernier pour l'établissement de la pression d'éjection.
  2. Dispositif pour l'éjection impulsionnelle d'un liquide, notamment d'un agent d'extinction de feu, comportant un tube (12;12') ou un tuyau d'éjection, qui possède une ouverture avant (14;14') et qui est relié à une source de liquide (1;1'), comportant une pompe à haute pression (2;2') qui est disposée entre la source de liquide (1;1') et l'ouverture avant (14; 14') et sert à produire une pression pour l'éjection d'une quantité de liquide hors de l'ouverture avant (14;14') sous une pression élevée, de sorte que la quantité de liquide est divisée sous la forme d'un brouillard constitué de petites gouttelettes de liquide, et comportant un élément de blocage (13;13'), qui est prévu entre la pompe à haute pression (2;2') et l'ouverture (14;14') et est déplaçable entre une position ouverte d'éjection et une position sensiblement fermée de blocage, caractérisé en ce qu'au moins un accumulateur de pression (10;10a,10b,10c,10') devant être chargé par un liquide est prévu entre la pompe à haute pression (2;2') et l'élément de blocage (13;13').
  3. Dispositif selon la revendication 2, caractérisé en ce que l'ouverture (14;14') est une ouverture de buse formant le jet de pulvérisation.
  4. Dispositif selon la revendication 2 ou 3, caractérisé en ce que le dispositif de blocage (13;13') est une soupape de blocage pouvant être actionnée manuellement.
  5. Dispositif selon l'une des revendications 2 à 4, caractérisé en ce que le au moins un accumulateur de pression (10;10a,10b,10c,10') est un accumulateur à membrane ou un accumulateur à bulles.
  6. Dispositif selon l'une des revendications 2 à 5, caractérisé par plusieurs accumulateurs de pression (10a, 10b, 10c, 10') reliés d'une part à la sortie de la pompe à haute pression (2') et d'autre part à l'élément de blocage (13').
  7. Dispositif selon l'une des revendications 2 à 6, caractérisé en ce que la pompe à haute pression (2;2') produit une pression de refoulement comprise entre 20 bars et 500 bars.
  8. Dispositif selon la revendication 7, caractérisé en ce que la pression de refoulement est située entre 40 bars et 300 bars.
  9. Dispositif selon l'une des revendications 2 à 8, caractérisé en ce que le au moins un accumulateur de pression (10,10a,10b,10c,10') possède une capacité d'absorption comprise entre 0,3 l et 5 l.
EP95250235A 1994-09-28 1995-09-27 Procédé et dispositif pour la décharge à impulsion d'un fluide, particulièrement d'un agent extincteur de feu Expired - Lifetime EP0704229B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4436135 1994-09-28
DE4436135A DE4436135A1 (de) 1994-09-28 1994-09-28 Verfahren und Vorrichtung zum impulsförmigen Austragen einer Flüssigkeit, insbesondere eines Feuerlöschmittels

Publications (3)

Publication Number Publication Date
EP0704229A2 EP0704229A2 (fr) 1996-04-03
EP0704229A3 EP0704229A3 (fr) 1997-02-05
EP0704229B1 true EP0704229B1 (fr) 2001-11-21

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ID=6530372

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95250235A Expired - Lifetime EP0704229B1 (fr) 1994-09-28 1995-09-27 Procédé et dispositif pour la décharge à impulsion d'un fluide, particulièrement d'un agent extincteur de feu

Country Status (3)

Country Link
EP (1) EP0704229B1 (fr)
AT (1) ATE209057T1 (fr)
DE (2) DE4436135A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19627353C1 (de) * 1996-06-27 1997-10-23 Feuerschutz G Knopf Gmbh Verfahren zur dynamischen Löschmittelanwendung und Vorrichtung zur Durchführung des Verfahrens

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4512955A (en) * 1975-06-30 1985-04-23 Kenji Etani Apparatus for water treatment
US4182354A (en) * 1978-05-02 1980-01-08 U.S. ParaPlate Corporation Method and apparatus for flow diversion in a high pressure fluid delivery system
DE3825078C3 (de) 1988-07-23 1996-11-14 Hardt Hans Joachim Feuerlöschvorrichtung

Also Published As

Publication number Publication date
ATE209057T1 (de) 2001-12-15
DE4436135A1 (de) 1996-04-04
EP0704229A3 (fr) 1997-02-05
DE59509863D1 (de) 2002-01-03
EP0704229A2 (fr) 1996-04-03

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